Do you understand the function and production materials of preforms?

Everyone has seen plastic bottle caps. The size of this kind of plastic bottle caps seems to be about the same. Do you know how they are made? In fact, it is made with the help of preforms. This part is filled with raw materials into the gun mold of the mold under a specific temperature and pressure by injection molding. It is formed under the working conditions of the injection molding machine. After injection molding, it is an intermediate. Semi-finished products are then blow molded into end products. So do you know the function of the preform and the production material? If you don't know, just browse the detailed introduction below, I believe you will have the answer after reading it.

The role of preforms:

It can be viewed better after it is completed, and if there are any unsatisfactory places, it can be easily corrected, so that it will not become a waste product after completion.

It can be very good to send us the model, which is more effective for the production of the whole seat.

After the model is satisfied, we can naturally devote ourselves to the production of the inspection better, and can save some mistakes, so as to better protect our overall interests.

The materials used for preform production include PVC, PET, PS and PP. The following is a detailed introduction.

Because of its soft texture, high toughness, and good formability, this material is generally used on the outer packaging of products. Some of our common toys and cosmetics are made of this material.

This type of material has relatively high quality requirements and can be used in food packaging.

The preforms made of this kind of material are like disposable products because of their poor toughness.

This material can be said to be the best among the preform materials, fully meeting the requirements of food grade, but it also has disadvantages, that is, the plasticity is not good, so the processing cost is relatively high.

1. The end surface of the bottle mouth should be flat, without damage or notch, and the thread should be complete and smooth, without cracks, overflow or deformation, and there should be no oil stains on the inside and outside.

2. The label pattern and text are clear, no misprints or missing prints, no obvious wrinkles, and the bar code can be read correctly.

3. The bottom of the bottle is well formed, no depression, no protrusion, no deviation from the center point, no cracks and no delamination at the bottom of the bottle, and the mouth cannot exceed the bottom plane.

4. The surface of the bottle is clean, dry, free from oil, dust, odor, and there is no impurity in the bottle.

5.There is no shrinkage deformation on the mouth and body of the bottle, no flat bottle, no side wall deformation, no convex bottom, and no depression.

30MM 30/25 PET Preform

NECK TYPE	NECK SIZE	WEIGHT	HEIGHT	QTY/CTN	CARTON SIZE
30/25	30mm	13g	84mm	1040	53x35x38
30/25	30mm	14g	84mm	1040	53x35x38
30/25	30mm	16g	92mm	1000	53x35x38
30/25	30mm	17g	92mm	1000	53x35x38
30/25	30mm	18g	92mm	850	53x35x38
30/25	30mm	19g	92mm	850	53x35x38
30/25	30mm	20g	94mm	850	53x35x38
30/25	30mm	21g	94mm	850	53x35x38
30/25	30mm	22g	106mm	760	53x35x38
30/25	30mm	23g	103mm	680	53x35x38
30/25	30mm	25g	103mm	680	53x35x38
30/25	30mm	28g	121mm	580	53x35x38
30/25	30mm	30g	121mm	580	53x35x38
30/25	30mm	32g	128mm	500	53x35x38
30/25	30mm	34g	128mm	500	53x35x38
30/25	30mm	36g	130mm	460	53x35x38
30/25	30mm	38g	133mm	460	53x35x38
30/25	30mm	40g	143mm	420	53x35x38
30/25	30mm	43g	147mm	420	53x35x38
30/25	30mm	45g	141mm	390	47x31x34
30/25	30mm	50g		380	50x38x28