SINO-PK is well famous for wide mouth preform moulds production

Wide mouth preform moulds is one kind of preform moulds, it mainly stands for those preforms with diameter more than 42mm, and it is also named jar preform moulds. The wide mouth preform moulds are mainly designed for candy and foods packaging. With more than 20 years’ experience, SINO-PK is professional for wide mouth preform moulds production.

Our jar preform moulds have below features:

Multi-cavities design - For wide mouth preform moulds, we can offer the cavity from1, 4, 6, 8, 12, 16, 24…as per customers’ productivity requirement.

Advanced hot runner system - Anole hot runner valve gate system is applied for SINO-PK wide mouth preform moulds making, the heating elements are from Germany with durable heating performance, the valve gate designs are for material sealing, avoiding the plastic material leakage during injection.

Mould Component interchange - All the mould cores and cavities are self locking system. With high precise dimension control, all the same parts can be interchangeable, and if there is one cavity damaged during the production, only this cavity need to be replaced. Also we can make the neck interchange, for example, we can offer two kinds of neck screws for one set mould, and then the customer can produce the wide mouth preform moulds with two kinds of screw neck to meet his packing requirement.

Weight interchange - For wide mouth preform moulds, we can make the weight interchange around 10g, 20g, and this help customer to reduce a lot of mould production investment.

Mould machining process - For jar preform mold, the tooling is more important compared to standard preform moulds, because the diameter is bigger, the engineers must be very professional and in top mentality. The jar preform moulds core and cavity are required to go though the rough tooling, and precision tooling to make sure the dimension is of top precision. In the precise tooling stage, high speed lathe Mazak is used, and after each tooling stage, the preform moulds components must be inspected by the QC department. If the inspection is qualified, then they will be passed to next step; but if the inspection indicates there is any dimension out of the tolerance, then we need to repeat the previous step or even reprepare the steel, no any mistakes is allowed in SINO-PK’s order management.

Jar preform sample inspection:

After the mould trial, our QC dept will inspect the samples with at least 5 full shots; the main points which should be inspected are as below:

·         Wide mouth preform weight: the weight from each cavity should be at lowest variation.

·         Wide mouth preform ID and OD: the ID is for the mandrel matching and OD is for cap fitting, so these two dimensions are very important.

·         Wide mouth Preform thickness variation: the thickness must be kept within the lowest difference; otherwise the blowing will be affected

·         Wide mouth Preform Polariscope testing: this is to check if the plastic flow is balanced to make sure the preform is easy for blowing

·         Wide mouth preform surface: mainly preform will be produced in PET transparent material, so the surface appearance is very important.

·         Wide mouth preform blowing: this is the key point, so when we make the product design, the blowing feature also needs to be considered.

·         Plastic part design

·         3D mould design

·         2D mould assembly drawing

·         Mould production

·         Plastic injection molding

·         Mould installation in customer’s factory

·         Training for customers’ engineers

Sino Package Mold Co. Ltd is dedicated for the improvement for the wide mouth preform moulds and jar preform moulds. Also we can offer customers the complete line for wide mouth bottle production. Only if you offer us your idea, we can help you to realize.