Quality requirements for blow molding products

The quality requirements of blow molding products are also very strict. Today, our blow molding machine factory will introduce them to you through the following points. I hope you can understand the quality requirements of blow molding products more clearly.

1. Appearance quality requirements

(1) The product surface is smooth, no burr, no bad plasticization, no obvious scratches and stripes, watermark, and the barrel mouth is smooth and clean

(2) All parts of the barrel mouth and barrel body of the products have no materials and no damage.

(3) The barrel mouth of the product is flat without deformation, there is no blocking in the barrel mouth, the wall thickness of the barrel mouth should be visually uniform, and there are bucket products

(4) The barrel handle is not blocked, the barrel body has no obvious deformation, the barrel standing on the ground can not have obvious shaking.

(5) No oil or other impurities are attached inside or outside the product. Products with a volume of not less than 4L, black spots on the surface of the barrel

Quality maximum between 0.5~1. 5mm, and ≤5: volume less than 4L products, the maximum length of black spot impurities between 0.5~ 1.5mm shall not be greater than 3. Black spots around the impurities should be opaque, otherwise, regardless of the size, number and location of the black spots, should be removed. If there are metal powder clumps, the control method is the same as that of impurity black spot. There should be no impurities in the barrel.

(6) Product color uniform, no obvious color difference, and to seal sample prevail. The sealing drum shall only be used as the basis for the quality judgment of the appearance, and the dimensions shall be subject to the explicit provisions of this standard.

(7) The liquid level line is colorless, translucent, clear, clear boundary, which shall not include impurities. The liquid level line should be straight and even in width. Distributed between scale and number and not in contact with them. 3.5L~6L products

(8) The width of the liquid level line is 6~8mm; The width of the liquid level line of 1.5L~ 3L products is 4~ 6mm; The width of liquid level line of products ≤1L is 2.5~ 4m

2. Operation requirements

Before bagging, check the appearance quality of the barrel first. The place with rough edges on the barrel body should be trimmed with a knife. There are a few rough edges at the mouth of the barrel. When the total length is less than 1/4 of the circumference of the barrel mouth, use the back of the knife to smooth the raw edge. Do not use the blade to cut. Necessary measures should be taken immediately if any rough edges fail to meet one of the above conditions. When sharp and hard raw edges are formed at the mold closing line on both sides of the barrel mouth, they should not protrude above the plane of the barrel mouth, and the length should not be greater than the thread, otherwise necessary measures must be taken. Care should be taken to keep the mouth of the barrel down during repair to ensure that the cut waste does not fall into the barrel.

3. Packaging and marking requirements

When bagging, use a complete packaging bag, and pay attention to the packaging bag clean, do not contain other materials; The drums should be cooled to the approximate ambient temperature before being put into packaging bags, and the drums should not be vigorously squeezed between them.

4 Sampling inspection requirements

Sampling scheme: One batch per shift (12 hours). Determination method: According to the sample test results, if one item is unqualified, the whole batch is unqualified. The qualified batch shall be accepted, and the unqualified batch can be returned. For the unqualified batch, when the unqualified products are removed, double sampling inspection, if there are still nonconforming items to be returned. If one item of appearance is unqualified, the whole batch is