TWI581937B - A thin strip for a hollow blow molding unit - Google Patents

Description

Thin strip for hollow blow molding unit

The present invention relates to a thin strip for a hollow blow molding unit; in particular, a foamed thin strip is softened and the contact surface is melted and combined with the working temperature of the molten semi-solid expanded billet. Compressed by the pressurized gas, the tensile deformation occurs, and a large gap is formed between the adjacent contact positions without being mistaken as a defective product, and a foamed thin strip can be produced. When the defective product of the hollow blow molding unit is directly recovered and pulverized and reused, the recycling rate and the manufacturing cost thereof can be greatly improved.

According to the customary air-blowing tool box, please refer to the “Approval Certificate No. M397891” of the “Pneumatic Blowing Box Surface Layer Structure”, which is a combination of synthetic materials such as synthetic leather or leather or cloth. Forming a finished product on a molten semi-solid expanded billet; however, since the thermal expansion rate or shrinkage ratio of the synthetic leather or the leather or cloth is different from that of the expanded billet, the joint surface of the two different materials is obtained. If it is not 100% cut or aligned, it will be recognized as defective by the consumer. At the same time, the defective product must be re-divided into recyclable and non-recyclable parts by manpower, so that it cannot be directly crushed and recycled. Further drastically reducing its recycling rate and increasing its manufacturing costs is another problem.

In view of the above, the present invention has been made in view of the above-mentioned shortcomings of the prior art, and proposes a thin strip for a hollow blow molding unit to effectively overcome the above problems, in order to benefit all consumers and manufacturers.

The main content of the thin strip for the hollow blow molding unit of the present invention is to provide a foamed thin strip attached to the hollow blow molding unit, the main component of the foamed thin strip at least comprising There are various plastic particles (such as: PE particles, or PP particles, or EVA particles, or a mixture of PE particles and PP particles, or a mixture of PE particles and EVA particles, or a mixture of PP particles and EVA particles, or PE particles and The mixture of PP particles and EVA particles and the foaming agent are respectively mixed and stirred in a certain ratio, and then heated and melted and recombined to become a foamed thin strip with better ductility and slightly soft elasticity and impermeability. After being placed in the mold, the foamed thin strip can be softened and pressed with the pressurized gas continuously injected into the expanded billet according to the working temperature of the hot melt semi-solid expanded billet, so that the foamed thin strip is pressed It can be extended tensile deformation along with the extended tensile deformation of the expanded billet, so that the thermal expansion rate or cooling shrinkage between the foamed thin strip and the expanded billet is consistent, and the adjacent contact position is not caused. Larger The gap is mistaken for the defective product, and at the same time, the melting and recombination of the surface of the foamed thin strip is caused by the working temperature of the molten semi-solid expanded billet to increase the bonding strength between the contact surfaces. The effective overcoming of the conventional structure is plagued by the easy impact.

The foamed thin decorative strip of the invention is located at the second highest surface of the hollow blow molding unit or at the bottom surface between two adjacent ribs, so as to prevent scratching and scratching, and to extend the product. In addition to the expiration date of the identification, at the same time, if a hollow blow molding unit having a foamed thin decorative strip on the surface is produced as a defective product, the foamed thin decorative strip and the hollow blow molding unit can be directly lost. It is another progress to enter the pulverizer for recycling and pulverization and reuse it to greatly improve its recycling efficiency and reduce its manufacturing cost.

1‧‧‧Blow blow molding unit

10‧‧‧Outer surface

11‧‧‧ high surface

12‧‧‧ ribs

13‧‧‧ ribs

14‧‧‧ bottom surface

2‧‧‧Thin strips

Figure 1 is a combined cross-sectional view of the present invention when used in conjunction with a hollow blow molding unit.

Fig. 2 is a perspective sectional view showing the three-dimensional combination of Fig. 1.

Figure 3 is a perspective assembled view of the present invention when used in combination with another hollow blow molding unit.

The present invention relates to a thin strip for a hollow blow molding unit, as shown in Figures 1 to 3, which includes an attached to the hollow blow molding unit 1 (the finger can be applied to the hollow blow air) Foamed thin strip 2 on a molding tool box, a hollow blow molding container, a hollow blow molding pot, a hollow blow molding float, etc. (ie, between the foamed thin strip 2 and the hollow blow molding unit 1) The bonding method may be an adhesive bonding method or an integral blow molding method, and the foamed thin strip 2 is a plastic particle (for example, PE particles, or PP particles, or EVA particles, or PE). a mixture of particles and PP particles, or a mixture of PE particles and EVA particles, or a mixture of PP particles and EVA particles, or a mixture of PE particles and PP particles and EVA particles, and a foaming agent are mixed and stirred at a certain ratio. The heat melting is recombined to become a foamed thin strip 2 having better ductility and slightly soft elasticity and impermeability, and the foamed thin strip 2 can be located on the outer surface of the hollow blow molding unit 1. 10, or second highest surface 11, or two phases on it The bottom surface 14 between the ribs 12, 13 (as shown in Figures 2 to 4) serves as a scratch-resistant and scratch-resistant function; further, the method for manufacturing the foamed thin strip 2 comprises at least: (A) mixing Step: mixing plastic particles (such as: PE particles, PP particles, EVA particles, etc.) and foaming agent into a mixing device (not shown) in a certain proportion, and mixing and mixing into a mixed composition, wherein, 100 weights The main component of the mixture of percentages The composition comprises at least: about 99 to 99.98% of the total weight of the PE particles and about 0.02 to 25% of the total weight of the foaming agent; and the main component of the above mixed composition may also be from about 75 to 99.98% of the total weight of the PP The particles and the mixed composition of about 0.02~25% of the total weight of the foaming agent are mixed, or the EVA particles are about 75~99.98% of the total weight and the hair is about 0.02~25% of the total weight. The mixed composition formed by the mixing of the foaming agent is substituted, or the PE particles of about 29 to 70.98% of the total weight and the PP particles of about 29 to 70.98% of the total weight and the hair of about 0.02 to 42% of the total weight. The mixed composition formed by mixing and stirring of the foaming agent is substituted, or is about 29 to 70.98% of the total weight of the PE particles and about 29 to 70.98% of the total weight of the EVA particles and about 0.02 to 42% of the total weight. The mixed composition formed by the mixing of the foaming agent is substituted, or is composed of about 95 to 70.98% of the total weight of the PP particles and about 29 to 70.98% of the total weight of the EVA particles and about 0.02 to 42% of the total weight. The mixed composition of the foaming agent is mixed, or is composed of about 15 to 59.98% of the total weight of the PE particles and about 20% of the total weight. ~59.98% of the PP particles and about 20 to 59.98% of the total weight of the EVA particles and about 0.02 to 40% of the total weight of the foaming agent mixed composition of the mixing composition is replaced.

In the future, the present invention can further add a mixed powder of about 0 to 5% of the total weight to the above mixed composition for mixing and stirring, and the miscellaneous powder is preferably the toner. As a color basis for changing the hollow blow molding unit 1 after cooling molding.

(B) heating fusing step: turning on a heating device (not shown) to an operating temperature (i.e., between 150 and 250 degrees), so that the mixed composition described above starts to melt, so that the different materials of the mixed composition are The molecules are melted and realigned to each other to form a melt having better ductility and slightly soft elasticity and impermeability; (C) molding control step: from the mold exit of the molding equipment (not shown) The end (not shown) extrudes the melt to form a continuous strip of foamed prototypes, and in order to achieve a more precise control of the size, the continuous strip of foamed articles can be rolled through the roller. Then, a continuous foamed thin article having a better ductility and a slightly soft elasticity and impermeability is formed, and the thickness dimension of the foamed thin article is preferably controlled between 0.05 and 3 mm; D) cooling setting step: after the foaming thin object prototype is cooled by a cooling device (not shown), a foamed thin strip prototype having better ductility and slightly soft elasticity and impermeability is formed. (ie, the thickness of the prototype of the foamed thin strip is kept between 0.05 and 3 mm); (E) the step of winding up: winding the cooled shaped foam strip into a predetermined number of coils of foam a thin strip shape; (F) a cutting step: cutting the roll into a predetermined number of rolls of the foamed thin strips to form a separate moving foam strip 2; (G) Fixing step: fixing with the third component (such as: tape, sticker, packaging bag, packing box, etc.) The effect is such that the slit end of the foamed thin strip 2 and the bundle of foamed thin strips are fixedly integrated; (H) finished product: forming a bundle of strips with better ductility and slightly softness The elastic and air-impermeable foamed thin strip 2 (ie, the foamed thin strip 2 has a thickness of about 0.05 to 3 mm), and the foamed thin strip 2 is freely movable. Finished product.

The foamed thin strip 2 produced by the above steps is placed on the inner surface of the mold (not shown), and then the male and female molds (not shown) are used to melt the semi-solid expanded embryo. The material (not shown) is sandwiched therein, and the hot-melt semi-solid expanded billet is continuously expanded and closely adhered to the foamed thin film by the action of the pressurized gas injected by the injection tube (not shown). Strip 2 On the surface, at this time, the operating temperature of the hot-melt semi-solid expanded billet is about 150-250 degrees, which causes the entire foamed thin strip 2 to soften and its foamed contact with the expanded billet. The surface of the strip 2 is melted and recombined, and then pressed by a continuously injected pressurized gas, so that the foamed thin strip 2 can be stretched and stretched along with the stretched deformation of the heat-melted semi-solid expanded billet. The deformation (that is, the thermal expansion rate or the cooling shrinkage ratio between the foamed thin decorative strip and the expanded billet is consistent), so that a large gap between adjacent contact positions is not caused, and the product is mistakenly considered as a defective product, and at the same time, Will melt and recombine the surface of the foamed thin strip 2 with the working temperature of the molten semi-solid expanded billet to increase the bonding strength between the contact surfaces, and effectively overcome the conventional structure by being easily impacted. In addition, at the same time, the foamed thin strip 2 is located at the second highest surface 11 of the hollow blow molding unit 1, or the bottom surface between the two adjacent ribs 12, 13 on the hollow blow molding unit 1. 14 places to prevent scratching and scratching And then be able to extend the validity of identification products.

In the production process, if a defective product of the hollow blowing molding unit 1 having the foamed thin strip 2 is produced, the foamed thin strip 2 and the hollow blow molding unit 1 can be directly lost. The use of the pulverizer (not shown) for recycling and pulverization to greatly improve the recycling rate and reduce the manufacturing cost thereof is also another industrial utilization and progress of the conventional structure of the present invention. Advocate.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; therefore, the features and spirits described in the scope of the present application are equally varied or modified. Within the scope of the patent application of the present invention.

1‧‧‧Blow blow molding unit

10‧‧‧Outer surface

11‧‧‧ high surface

12‧‧‧ ribs

13‧‧‧ ribs

14‧‧‧ bottom surface

2‧‧‧Thin strips

Claims (4)

A thin decorative strip for a hollow blow molding unit, comprising at least: a foamed thin decorative strip attached to a hollow blow molding unit, the main component of the foamed thin decorative strip comprising at least: plastic particles and The foaming agent is mixed and stirred in a ratio, and then heated and melted and recombined, in particular, by using PE particles having a total weight of 20 to 59.98% and PP particles having a total weight of 20 to 59.98% and a total weight of 20 to 59.98. % of the EVA particles and the foaming agent of 0.02 to 40% of the total weight and the miscellaneous powders of 0 to 5% of the total weight are mixed and stirred, and then heat-melted and recombined into a foamed thin decorative strip, and the miscellaneous The powder is a toner, and the thickness of the foamed thin strip is between 0.05 and 0.49 mm, so that the foamed thin strip can be softened with the working temperature of the hot melt semi-solid expanded billet. The continuous injection of pressurized gas compresses and then produces tensile deformation, and the thermal expansion rate or cooling shrinkage between the foamed thin strip and the expanded billet is similar, so that the adjacent contact positions are not Produce a gap and be mistaken for a defective product. At the same time, it will also melt with the heat. The working temperature of the expanded billet causes the surface of the foamed thin strip to be melted and recombined between the contact surfaces, and the foamed thin strip can be pulverized together with the expanded billet when the defective product is produced. Recycling. The thin strip for a hollow blow molding unit according to claim 1, wherein the joint between the foamed thin strip and the hollow blow molding unit is an integral blow molding method. The thin strip for a hollow blow molding unit according to claim 2, wherein the foamed thin strip is located at a second highest surface of the hollow blow molding unit to make the foamed thin strip The surface is lower than the surface of two adjacent ribs, and the useful life of the product with scratch resistance or scratch resistance is achieved. The thin strip for a hollow blow molding unit according to claim 2, wherein the foamed thin strip is located at a bottom surface between two adjacent ribs on the hollow blow molding unit, so that The surface of the foamed thin strip is lower than the surface of the adjacent ribs, and the useful life of the product with scratch resistance or scratch resistance is achieved.