CN207141835U - Plastic-metal combined type easily turns on bottle cap - Google Patents

Abstract

The utility model plastic-metal combined type easily turns on bottle cap, including enclosing cover, the enclosing cover coordinates with whorl of bottleneck, metal inner cap is installed with the enclosing cover, the metal inner cap includes the metal-back for being fitted close with enclosing cover and being fixed on bottleneck axial direction with enclosing cover that die cut is formed, and sealing ring is formed after the metal-back edge molding or drop modeling bound edge.Its purpose is to the plastic-metal combined type for providing a kind of good sealing effect, being not easy corrosion, can easily turning on easily to turn on bottle cap.

Description

Plastic-metal combined type easily turns on bottle cap

Technical field

Container package, sealing tech field are the utility model is related to, is easily turned round more particularly to a kind of plastic-metal combined type Corkage lid.

Background technology

As shown in Figure 1 and Figure 2, the conventional monomer formula torsion-opening type plastic bottle closure of generally existing includes enclosing cover 21 in the market And the annular gasket 22 inside enclosing cover 21, the rectangular cross-section of annular gasket 22 and often using the material system such as silica gel, PET Into.This bottle cap is one-piece construction, i.e., whole bottle cap is molded in addition to annular gasket 22 in injection machine previous step, although Designing and manufacturing technique is simple, but style sheet one, also, because the force of sliding friction of maximum occurs in annular gasket 22 and bottleneck 23 Between, and annular gasket 22, because smaller with the contact area of bottleneck 23, the coefficient of frictional resistance of annular gasket 22 of above-mentioned material is larger, Need to increase rotation dynamics during sealing and ensure airtight quality, which results in after the sealing, especially after hot filling, bottle It is excessive that lid turns on the dynamics that is needed during use, greatly affected practicality and simplification in bottle cap use.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of good sealing effect, is not easy corrosion, can easily turn on Plastic-metal combined type easily turns on bottle cap.

The utility model plastic-metal combined type easily turns on bottle cap, including enclosing cover, and the enclosing cover coordinates with whorl of bottleneck, institute State and metal inner cap is installed with enclosing cover, what the metal inner cap was formed including die cut is fitted close with enclosing cover and in bottleneck axle Sealing ring is formed after the metal-back fixed upwards with enclosing cover, the metal-back edge molding or drop modeling bound edge.

The utility model plastic-metal combined type easily turns on bottle cap, wherein the metal-back outer rim is folded radially inwardly shape Into folding part, the folding part is enclosed in the sealing ring.

The utility model plastic-metal combined type easily turns on bottle cap, wherein the enclosing cover intermediate openings, the metal-back position In the part in the opening be raised sphere, remainder be along metal-back radially stepped curved surface from inside to outside, The section form of zigzag of the curved surface.

The utility model plastic-metal combined type easily turns on bottle cap, wherein being provided with the enclosing cover madial wall along enclosing cover footpath To the grab to inner process, the grab is located at below metal inner cap to be moved down with limiting metal inner cap.

The utility model plastic-metal combined type easily turns on bottle cap, wherein the enclosing cover is made of PE or PP plastics, institute State metal-back to be made by electrolytic tinplate or aluminium sheet are stamped, the sealing ring is made up of thermoplastic elastomer or foamed glue.

Bottle cap of the present utility model forms sealing ring in the edge of metal-back using the technique of molding or drop modeling, this to set The contact area for increasing metal inner cap and bottleneck is put, enhances the sealing effectiveness of bottle cap.Moreover, molding or drop mould bound edge by gold The folding part of category shell fold inward is fully wrapped around, the stamped outer rim formed of cutting is not allowed easy-to-rust.Meanwhile the utility model Bottle cap traditional one-piece plastic closure is changed to combined type, i.e., gold of the bottle cap of the present utility model by major function for sealing It is that the plastic outer cover turned on combines to belong to inner cap and major function, to solve to be difficult to what is turned on existing for the bottle cap of background technology Problem.Specifically, plastic outer cover is made up of PE plastics or PP plastics, and metal inner cap is golden made of electrolytic tinplate or aluminium sheet The sealing ring composition that category shell and metal-back edge molding or drop modeling form, metal inner cap are kept with plastic outer cover by grab Being relatively fixed on axial direction, but due between plastics and metal coefficient of friction it is smaller, so, the two circumferentially can keep more It is readily relative to slide.Meanwhile metal inner cap keeps geo-stationary with bottleneck and combined closely, and ensure that excellent sealing. To turn on, the screw thread coordinated with bottleneck is arranged on plastic outer cover the major function of plastic outer cover, when user twists bottle cap When, rotated in advance with the plastic outer cover that contact of the external world, due to the presence of bottleneck and enclosing cover itself screw thread, outer cover rim bottleneck it is axial by Step rises, and during this, due to the circumferential relative slip of metal inner cap, plastic outer cover, metal inner cap and enclosing cover are originally in bottleneck Geo-stationary is axially retained, with the rising of plastic outer cover, in the presence of grab, metal inner cap rises with plastic outer cover, most Depart from bottleneck eventually, turn on completion.It is whole turn on during maximum force of sliding friction produce metal inner cap and plastic outer cover it Between, because force of sliding friction is relatively small between metallo-plastic, therefore power very little is turned on needed for whole bottle cap, fundamentally solved The problem of bottle cap present in background technology is difficult to turn on.

Bottle cap is easily turned on to plastic-metal combined type of the present utility model below in conjunction with the accompanying drawings to be described further.

Brief description of the drawings

Fig. 1 is the structural representation of conventional monomer formula torsion-opening type plastic bottle closure；

Fig. 2 is Fig. 1 A-A profiles；

Fig. 3 is the dimensional structure diagram that the utility model plastic-metal combined type easily turns on bottle cap；

Fig. 4 is the front view that the utility model plastic-metal combined type easily turns on bottle cap；

Fig. 5 is Fig. 4 B-B sectional views；

Fig. 6 is the front view that the utility model plastic-metal combined type easily turns on enclosing cover in bottle cap；

Fig. 7 is Fig. 6 C-C sectional views；

Fig. 8 is the dimensional structure diagram that the utility model plastic-metal combined type easily turns on metal inner cap in bottle cap；

Fig. 9 is the front view that the utility model plastic-metal combined type easily turns on metal inner cap in bottle cap；

Figure 10 is Fig. 9 D-D sectional views.

Embodiment

As shown in Figures 3 to 10, the utility model plastic-metal combined type easily turns on bottle cap, including enclosing cover 11, enclosing cover 11 Coordinate with whorl of bottleneck.Preferably, enclosing cover 11 is made of PE or PP plastics.Metal inner cap 12, metal are installed with enclosing cover 11 Inner cap 12 includes die cut and forms metal-back 121, and the metal-back 121 is fitted close with enclosing cover 11 and on bottleneck axial direction with outside Lid 11 is fixed, i.e. the metal-back 121 and the geo-stationary in the axial direction of bottleneck of enclosing cover 11.Specifically, the intermediate openings of enclosing cover 11, When metal inner cap 12 is installed in enclosing cover 11, the part that metal-back 121 is located in opening is raised sphere 1212, except sphere Part beyond 1212 is along the radially stepped curved surface 1213 from inside to outside of metal-back 121, is passed through the straight of metal-back 121 After footpath and another plane perpendicular to the place plane of metal-back 121 are cut, the section form of zigzag of curved surface 1213.Metal-back 121 edges mold or drop moulds formation sealing ring 122 after bound edge, further to improve sealing property so that sealing ring 122 is more Bottleneck is compressed, the outer rim of metal-back 121 is folded radially inwardly to form folding part 1211, and folding part 1211 is also molded or drips at modeling It is enclosed after reason in sealing ring 122, it is intended that when liquid needs to carry out hot filling in container, the sphere of metal-back 121 1212 visually for quality inspection personnel and can simply disappear after liquid cooling because principle of expanding with heat and contracting with cold is to bottle sunken inside Expense person provides the foundation that container is fully sealed.Further, to ensure the stability connected between metal inner cap 12 and enclosing cover 11, The grab 111 along the radially-inwardly projection of enclosing cover 11 is provided with the madial wall of enclosing cover 11, grab 111 is located at the sealing of metal inner cap 12 The lower section of ring 122 is moved down with limiting metal inner cap 12, avoids metal inner cap 12 from being separated by external force with enclosing cover 11.Preferably, metal Shell 121 is made by electrolytic tinplate or aluminium sheet are stamped, and sealing ring 122 is made up of thermoplastic elastomer or foamed glue.

Embodiment described above is only that preferred embodiment of the present utility model is described, not to this practicality New scope is defined, and on the premise of the utility model design spirit is not departed from, those of ordinary skill in the art are to this The various modifications and improvement that the technical scheme of utility model is made, the protection of the utility model claims book determination all should be fallen into In the range of.

Claims (5)

1. a kind of plastic-metal combined type easily turns on bottle cap, including enclosing cover (11), the enclosing cover (11) coordinates with whorl of bottleneck, its It is characterised by：Metal inner cap (12) is installed with the enclosing cover (11), the metal inner cap (12) includes what die cut was formed The metal-back (121) for being fitted close with enclosing cover (11) and being fixed on bottleneck axial direction with enclosing cover (11), metal-back (121) side Molded at edge or form sealing ring (122) after dripping modeling bound edge.

2. plastic-metal combined type according to claim 1 easily turns on bottle cap, it is characterised in that：The metal-back (121) Outer rim is folded radially inwardly to form folding part (1211), and the folding part (1211) is enclosed in the sealing ring (122).

3. plastic-metal combined type according to claim 2 easily turns on bottle cap, it is characterised in that：In the middle part of the enclosing cover (11) Opening, the part that the metal-back (121) is located in the opening are raised sphere (1212), and remainder is along metal-back (121) radially stepped curved surface (1213) from inside to outside, the section form of zigzag of the curved surface (1213).

4. plastic-metal combined type according to claim 3 easily turns on bottle cap, it is characterised in that：On the inside of the enclosing cover (11) The grab (111) along enclosing cover (11) radially-inwardly projection is provided with wall, the grab (111) is located at below metal inner cap (12) Moved down with limiting metal inner cap (12).

5. plastic-metal combined type according to claim 4 easily turns on bottle cap, it is characterised in that：The enclosing cover (11) uses PE or PP plastics are made, and the metal-back (121) is made by electrolytic tinplate or aluminium sheet are stamped, the sealing ring (122) It is made up of thermoplastic elastomer or foamed glue.