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Kính gửi:
|
- Cục Xuất nhập khẩu - Bộ Công Thương;
- Cục Chế biến và Phát triển thị trường nông nghiệp - Bộ Nông nghiệp và Phát
triển nông thôn;
- Cục An toàn thực phẩm - Bộ Y tế;
- Hiệp hội chế biến và xuất khẩu thủy sản (VASEP);
- Hội khoa học và công nghệ lương thực thực phẩm Việt Nam;
- Công ty cổ phần Tập đoàn Thủy sản Minh Phú;
- Công ty cổ phần Thực phẩm Sao Ta;
- Công ty cổ phần Vĩnh Hoàn;
- Liên đoàn Thương mại và Công nghiệp Việt Nam (VCCI).
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Nhằm thực hiện cảnh báo sớm cho Hiệp hội,
doanh nghiệp và các cơ quan quản lý có liên quan về các hàng rào kỹ thuật trong
thương mại (TBT) của các nước thành viên WTO, Tổng cục Tiêu chuẩn đo lường Chất
lượng (TCĐLCL) xin gửi thông tin liên quan tới dự thảo Tiêu chuẩn của các Tiểu
vương quốc Ả rập Thống nhất (UAE) đối với vỏ lon dùng đóng hộp thực phẩm như
sau:
1. Ngày 15/11/2023, các tiểu vương quốc Ả rập
(UAE) đã gửi thông báo số G/TBT/N/ARE/597, G/TBT/N/BHR/683, G/TBT/N/KWT/659, G/TBT/N/OMN/511,
G/TBT/N/QAT/661, G/TBT/N/SAU/1316, G/TBT/N/YEM/268 về tiêu chuẩn áp dụng cho vỏ
lon bằng thép (mạ hoặc không mạ thiếc) sử dụng trong đóng hộp thực phẩm. Dự thảo
đưa ra các yêu cầu kỹ thuật đối với loại thép sử dụng để sản xuất ra vỏ lon thiếc
dùng đóng hộp thực phẩm, các yêu cầu về ghi nhãn, quy trình thử nghiệm, phương
pháp thử nghiệm và lấy mẫu.
Theo UAE, Dự thảo này được xây dựng nhằm mục
tiêu bảo vệ môi trường, ngăn chặn các hành vi gian lận và bảo vệ người tiêu
dùng. UAE sẽ tiếp nhận ý kiến góp ý từ các nước Thành viên WTO đến hết ngày
14/01/2024.
Văn bản đầy đủ của Dự thảo đề nghị tìm hiểu tại
đường dẫn https://members.wto.org/cmatlachments/2023/TBT/ARE/23_13450_00_e.pdf
hoặc tại Phụ lục Công văn.
2. Tổng cục TCĐLCL gửi Quý Cơ quan, đơn vị
thông tin và đề nghị phản hồi cho Tổng cục TCĐLCL trước ngày 31/12/2023
trong trường hợp có góp ý đối với Dự thảo nêu trên của UAE. Ý kiến của Quý cơ
quan sẽ được Tổng cục TCĐLCL tổng hợp gửi cho cơ quan liên quan của UAE để xem
xét, tiếp thu.
Thông tin góp ý xin gửi về Tổng cục Tiêu chuẩn
Đo lường Chất lượng qua Văn phòng TBT Việt Nam, số 8 Hoàng Quốc Việt, Cầu Giấy,
Hà Nội, điện thoại 02437912145, email: tbtvn@tcvn.gov.vn./.
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Nơi nhận:
-
Như trên;
- Thứ trưởng Lê Xuân Định (để b/c);
- Lưu: VT, TBT.
|
Q. TỔNG CỤC TRƯỞNG
Hà Minh Hiệp
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GSO STANDARD
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GSO 1791/2022
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THREE
PIECE ROUND STEEL CANS USED FOR CANNING FOOD STUFFS
1. SCOPE AND FIELD OF
APPLICATION
This standard is concerned with the single
& double reduced three piece round steel cans (tin coated or tin free
steel) used for canning food stuffs.
2. COMPLIMENTARY
REFERENCE
2.1 GSO 1797 “Round Metal Cans Used for
Canning Food stuffs Definitions, Construciton, Dimensions and Capacities”.
2.2 GSO 1795 “Methods of Test for the Three
Piece Round Steel Cans Used for Canning Food stuffs”.
2.3. GSO ISO 11949: Cold-reduced tinmill
products -Electrolytic tinplate
3. DEFINITIONS
For the purpose of this standard, all
definitions mentioned in the Gulf Standard specified in items (2.1 & 2.3)
shall apply.
3.1 Food tin cans: They are cans made
of laminated steel and covered with tin, chrome or aluminum and its alloys with
magnesium and manganese and may be covered with a layer of paint or without a
layer of paint.
3.2 The tinning process: It is the
process of covering the tin with a layer of tin to prevent corrosion resulting
from chemical reactions with food components or preservative solutions (salt,
acidic or sugary) in packaging operations.
3.3 The chromium process: It is the
process of covering the tin with a layer of chromium and electrically
precipitated chromium oxide as an alternative to the tinning process.
3.4 Sealing: It is the process of
double sealing the top cover of metal containers after the filling process to
ensure the safety of food inside the package.
3.5 Single cold-reduced : description
of product in which the black plate has been reduced to the desired thickness
in a cold reduction mill and subsequently annealed and temper rolled
3.6 Double cold-reduced : description
of product in which the black plate has had a second major reduction after
annealing
4. REQUIREMENTS
The hermetically sealed round steel cans used
for canning food stuffs shall have the following:
4.1 Plate
4.1.1 Tin Plates
4.1.1.1 Tin plates used in the manufacturing
tin cans shall be made from steel sheets with 0.12 maximum carbon percent and
galvanized either by hot tin dipping or electrolytic process with a coating
layer. Appendix (1) gives the analysis of some types of steel used in food can
manufacture and the class of food according to corrosivity.
4.1.1.2 Plate thickness should not be less
than 0.10 mm for double reduced and less than 0.15 mm for single reduced.
4.1.1.3 The tin layer weight grams per meter
square shall be as shown in Appendix (2).
4.1.2 Tin Free Steel (Chrome Coated and
Oxide Chrome Electrolitically)
4.1.2.1 The chemical analysis of some type
of steel in cans manufacture shall be as shown in Appendix (1).
4.1.2.2 Plate thickness shall not be less
than 0.10 mm for double reduced and less than 0.15 mm for single reduced.
4.1.2.3 The chrome weight should not be less
than 50 milligram per meter square and chrome weight in oxide chrome as 7
milligram per meter square.
4.1.3 Plate shall neither alter the taste,
odour or properties of the canned food nor form harmful compounds with it.
4.2 Lacquer (interior coating )
4.2.1 It shall neither affect the taste ,
odour of food nor form harmful compounds with it.
4.2.2 The lacquer shall be smooth and
uniformly distributed on sheet surfaces, and it shall withstand the thermal
treatment degree for sterilization and/or pasteurization for the food material,
and also filling and storing condition.
4.2.3 The interior coating shall be one of
these specified for use in food industry according to the nature of the food,
as shown for example in Appendix 3.
4.2.4 The paint layer should completely
cover all the internal parts of the can
4.3 Elastic matter
4.3.1 The elastic matter used in the double
seaming shall be resistant to chemical changes and free from poisonous
compounds, i.e. Sulphur & Antimony.
4.3.2 It shall not cause change in the taste
or oder or properties of food, and shall withstand the temperature and pressure
during filling, storing and handling.
4.4 Double seaming
4.4.1 The can shall be hermetically sealed
by double seaming so as to prevent leakage into or from it.
4.4.2 It shall be regular in shape all
around the can diameter.
4.4.3 It shall be free from sharp edges.
4.4.4 It shall be uniform in thickness
4.4.5 It is not allowed to use the gasket
for side welding of cans that will be sterilized after filling with food.
4.5 The side seam for three pieces cans be
formed by electric welding or any other regular method shall be free from
defects causing leakage into or from it and side stripe varnish applied
Permitted to be used in contact with food.
4.6 Covers
4.6.1 Covers used for bottom and top of
three piece cans. It shall be suitable for double seaming with sealing compound
on cover.
4.6.2 Common covers standards or easy open
ends can be made of tin plates or tin free steel or aluminium. It shall be
lacquered depending on the canned food stuffs and shall be resistant to
internal pressure or vacuum and shall not impair food nor affect odour, taste,
colour.
4.7 The can shall be internally and
externally clean and free from swells or deformation (can bulged at both ends)
or other defects.
4.8 Permitted wrinkle number in the cover
hook shall be from 1 to 2.
4.9 The can shall be easily opened by any of
the widely used can openers.
4.10 Dimensions and capacities
4.10.1 The preferred nominal internal
diameters of cans and their tolerance in mm according to Gulf Standard
mentioned in item 2.1
4.10.2 The preferred nominal capacities and
their tolerance according to Gulf standard mentioned in item 2.1.
4.11 Performance Requirements
4.11.1 Pressure Test
4.11.1.1 It shall be capable of withstanding
air pressure as below :
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Common Food Can with Common Lid
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0.1 N/mm2 (Mega Pascal)
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Common Food Can with Easy Open End
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0.05 N/mm2 (Mega Pascal )
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Carbonated Drink Can
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0.655 N/mm2 (Mega Pascal)
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4.11.2 The average enamel rater level shall
be less than 5 mA and not more than 15 mA.
5. LABELLING
5.1 The following information shall be
declared on each pallet containing cans:
5.1.1 Manufacture’s name and/or his trade
mark.
5.1.2 Country of origin
5.1.3 Can nominal capacity in ml
5.1.4 Production date
5.1.5 Number of cans
5.1.6 Storage and handling conditions when
needed.
5.2 Each can shall be marked with the
following:
5.2.1 Trade mark of the manufacturer.
5.2.2 Code number (this code shall trace the
information needed about the can such as year, month and day of manufacture
from the records of manufacturer) or the date of manufacture (year, month and
day).
6. TESTING
All necessary tests shall be carried out on
samples taken according to item (7) to ensure their conformity to the
requirements of this standard.
7. SAMPLING
7.1 Samples necessary for visual inspection
and air pressure tests shall be taken at random as shown in Table 1.
Table 1
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No of cans in the
consignment
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Sample number
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Sample size
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Visual inspection
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Air pressure test
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Acceptance No.
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Rejection No.
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Acceptance No.
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Rejection No.
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Up to 3000
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First
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50
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3
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7
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0
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3
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Second
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50
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8
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9
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3
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4
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From 3001 up to 10000
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First
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80
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5
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9
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1
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4
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Second
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80
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12
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13
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4
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5
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From 10001 up to 35000
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First
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125
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7
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11
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2
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5
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Second
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125
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18
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19
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6
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7
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Over 35000
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First
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200
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11
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16
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3
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7
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Second
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200
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26
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27
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8
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9
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7.2 The dimensions measurement test shall be
carried out on 20 of the samples which have passed both the visual inspection
and air pressure tests.
7.3 The capacity test shall be carried out
on 10 of the samples which have passed the dimensions measurement test.
7.4 The lacquer test shall be carried out on
5 cans which passed the dimensions and capacity test.
7.5 The wrinkling number test shall be
carried out on 5 of the samples which have passed the capacity test.
7.6 To carry out the chemical analysis test,
a number of samples shall be taken at random according to the equation.
Where:
n = number of cans in sample
N = number of cans in consignment
An area 1250 mm2 shall be taken
from cans at a distance from edges and side seaming. Pieces of the same area
shall be taken from covers and bottoms in case of large size cans. An area of
625 mm2 taken from covers and bottoms in case of small size cans,
and a suitable quantity of elastic matter shall be taken from double seam.
8. METHODS OF TESTS
The tests shall be carried out in accordance
with Gulf standard mentioned in item 2.2.
9. RULES OF
ACCEPTANCE AND REJECTION
9.1 Samples shall be examined in accordance
with the test methods specified in Clause 8.
9.2 The consignment is deemed to be
complying with the visual test, if the defectives are equal to or less than the
acceptance number as shown in Table 1. If the defectives are more than or equal
to rejection number as shown in Table 1, the consignment is deemed to be
non-complying. If defectives are more than the acceptance number and less than
the rejection number, a second sample shall be taken and retested. If the
combined number of defectives of the first and the second samples is less than
or equal to the corresponding acceptance number, the consignment shall be
considered complying as regards to visual test, otherwise it shall be
considered non-complying.
9.3 The consignment is deemed to be
acceptable as regards other test (dimension - air pressure - ......etc.) if the
sample passes the tests mentioned in the standard mentioned in item 2.2. If the
sample does not pass any of the tests a second sample double the number of the
first sample shall be taken. The consignment shall be considered complying if
the second sample passes the repeated tests, otherwise it shall be considered
non complying.
Appendix
1
Chemical
analysis of some types of steel used in cans manufacture and class of food
according to corrosivity.
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Class of food
according to corrosivity
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Type of steel
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Food characteristics
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Chemical analysis
of steel elements in percent (maximum)
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C
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P
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Cu
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Si
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Mn
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S
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Ni
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Cr
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Mo
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As
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Most strongly
corrosive
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L
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High acidic fruit
products. Acidic, salty foods & dark coloured fruits
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0.12
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0.015
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0.06
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0.01
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0.25 to 0.60
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0.05
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0.04
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0.06
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0.05
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0.02
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Moderately corrosive
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MR
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Acidic vegetables
and mildly acidic fruits
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0.12
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0.015
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0.1
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0.01
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0.25 to 0.60
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0.05
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0.04
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0.06
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0.05
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0.02
|
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0.12
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0.02
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0.2
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0.01
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0.25 to 0.60
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0.05
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-
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-
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-
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-
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Mildly or non -
corrosive
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D
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Low acidity
products, dry and non processed products
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0.12
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0.07
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0.2
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0.01
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0.25 to 0.60
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0.05
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-
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-
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-
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-
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Appendix
2
Tin
layer weight
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Class of food
according to corrosively
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Food
characteristics
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Tin layer weight
internal g/m2
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Tin layer weight
external g/m2
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Most strongly corrosive
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High acidic fruit products. Acidic, salty
foods & dark coloured fruits
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+ 0
8.4 - 0.65
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2.8 + 0
- 0.35
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Moderately corrosive
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Acidic vegetables and mildly acidic fruits
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5.6 + 0
- 0.50
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2.8 + 0
- 0.35
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Mildly or noncorrosive
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Low acidity products, dry and non processed
products
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2.8 + 0
- 0.35
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2.8 + 0
- 0.35
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Appendix
3
Examples
of interior coating types used in cans
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Type
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Product resistance
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Fabricability
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Epoxy amino
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Excellent
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Good
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Epoxy phenolics
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Good
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Good
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Epoxy acrylates
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Excellent
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Good
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Epoxy acrylates/phenolics
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Excellent
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Good
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Solution vinyls
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Good to excellent
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Excellent
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Dispersion vinyls
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Excellent
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Excellent
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Polyesters
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Excellent
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Excellent
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