The hottest packaging material corrugated board II

2022-08-17
  • Detail

Packaging material corrugated cardboard (II)

according to the purpose and quality grade of raw materials, each kind of corrugated cardboard is divided into excellent products, first-class products and qualified products. Among them, the top-grade products are corrugated cardboard for the packaging of export commodities and valuables; The first-class products are corrugated cardboard for domestic goods packaging; The qualified products are corrugated board for short distance and low-cost commodity packaging

4.2 corrugated structure and 2. The size of the reduction mechanism composed of synchronous toothed belt and precision ball screw pair is

4.2.1 the corrugated structure and size requirements of corrugated cardboard should meet the requirements of Table 2, and its corrugated shape is UV type

corrugated board height, mm number of corrugated boards, pieces/300mm a 4.5 ~ 5.034 ± 2 C 3.5 ~ 4.038 ± 2 B 2.5 ~ 3.050 ± 2 e 1.1 ~ 2.096 ± 4 4 4.2.2 corrugated board thickness: the thickness of a single corrugated board should be higher than the lower limit of the corresponding corrugated height specified in table 2. The thickness of double corrugated board shall be higher than the sum of the lower limit values of the corresponding two heights specified in Table 2

4.2.3 the width and length of corrugated board shall be determined by both parties through negotiation

5 technical requirements

5.1 materials

5.1.1 carton board shall comply with the provisions of gb/t 13024

5.1.2 the corrugated original (or core) paper shall comply with the provisions of gb/t13023

5.1.3 use starch adhesive or other adhesives with the same effect

5.2 corrugated paperboard

5.2.1 the technical indicators of corrugated paperboard shall not be lower than those specified in Table 1

5.2.2 the bonding strength of corrugated board is not less than 588n/m

5.2.3 the delivery moisture of corrugated board (by moisture) is (14 ± 2)%

5.2.4 appearance of corrugated board: the surface should be flat and clean, without lack of materials and thin edges, the cutting edges should be neat and firmly bonded, and the sum of the degummed parts per square meter should not be greater than 20cm2

6 test method

6.1 the sample shall be taken and treated according to the provisions of gb/t 450 and gb/t 10739

6.2 the thickness shall be measured according to the provisions of gb/t 6547

6.3 measure the length and width with a steel tape or ruler with an accuracy of 1mm

6.4 the edge pressing strength shall be carried out according to the provisions of gb/t 6546

6.5 the bursting strength shall be carried out according to the provisions of gb/t 6545

6.6 the bonding strength shall be in accordance with the provisions of gb/t 6548

6.7 the delivery moisture of corrugated board can be measured with a rapid moisture tester or according to the provisions of gb/t 462, but there is no need to stick the pressure plate under the constant temperature and humidity place on one side for treatment

6.8 the appearance quality of corrugated board shall be evaluated by visual observation

7 detection rules

7.1 take the quantity of one delivery as a batch, and the sample unit is pieces

7.2 the supplier shall ensure that the products of the factory meet the requirements of this standard, and attach the quality inspection certificate

7.3 the sampling plan for delivery inspection shall be carried out in accordance with gb/t2828. The classification of delivery sampling items, inspection level, sampling plan and qualified quality level (AQL) shall be carried out in accordance with table 3

7.4 when judging according to the provisions of Table 3, if class B and class C nonconformities occur at the same time, on the premise of meeting the judgment values of AC and re of class B nonconformities, if the sum of class B and class C nonconformities is equal to or less than the AC value of class C nonconformities, it is judged to be qualified in batch; If it is greater than, it will be judged as unqualified or the second sample will be determined. The determination method is the same after determination

7.5 the demander has the right to inspect according to this standard. If there is any objection to the batch quality, it should notify the supplier of joint re inspection three months after arrival. If the re inspection results still do not meet the provisions of this standard, it will be judged as a batch of unqualified products, which will be handled by the supplier; If the re inspection results meet the provisions of this standard, it will be judged as qualified, and the demander will be responsible for handling it

sampling plan normal inspection secondary sampling plan inspection level S-3 unqualified classification sample size class B unqualified product qualified quality level

(AQL) = 4.0

ac re class C unqualified product qualified quality level

(AQL) = 6.5

ac re class B unqualified class C unqualified ≤ 150 301 - edge pressure strength

bursting strength adhesive strength thickness

delivery moisture appearance 5

5 (10) - -

- - 02

12802038 (16) 12343201 building blocks must also be able to be tightly fastened together until children disassemble them -35000 130313 (26) 34458 signs, packaging, transportation and storage

8.1 the packaging and marking of products shall be in accordance with the requirements of gb/t10342 or agreed by both parties

8.2 transport with awning, rain proof, moisture-proof and clean means must be used during transportation

8.3 the storage place should be ventilated and dry, away from fire sources, and the code for construction and acceptance of long-term building finishing engineering jgj/t29 ⑵ 003 yards should be 100mm above the ground. It is necessary to avoid rain, exposure and pollution, and it is strictly forbidden to squeeze large objects

8.4 the storage period of products after delivery is generally not more than half a year

Copyright © 2011 JIN SHI