US3767501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing thermoplastic articles having thin double walls
Assignee: Individual
•
Filing: 1970-10-19
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Granted: 1973-10-23
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Expires: 1990-10-19
Abstract
Abstract A method for producing cup-shaped, double-walled thermoplastic articles having two parts, namely a jacket and a liner nested in the jacket to define the inner and outer walls of the article, wherein batches of liners and batches of jackets are concomitantly formed in separate sheet sections of thermoplastic material at separate forming stations and at least one formed sheet section is transferred to a position where the jackets and liners of respective batches are internested, the internested parts are then blanked or cut out at a blanking or punching station to separate each pair of internested jacket and liner units, and the internested jackets and liners of each separated pair are secured together by beading or welding.
Inventors
- 👤 A Thiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:04
CPC Classifications
B; B29; B29C; B29C57/00; B29C57/12; B65; B65D; B65D81/00; B65D81/38; B65D81/3865; B65D81/3869; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1028; Y10T156/1031; Y10T156/1052; Y10T156/108; Y10T156/12; Y10T156/137
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
151 words
A method of producing cup-shaped, double-walled articles from synthetic material wherein the outer wall of each article is defined by a jacket and wherein the inner wall of each article is defined by a liner nested in the jacket, said method comprising the steps of forming in a first forming station first sheet sections of synthetic sheet material with each of said first sheet sections containing a batch of said liners, forming in a second forming station second sheet sections of synthetic sheet material with each of said second sheet sections containing a batch of said jackets, imparting relative motion between the thusly formed first and second sheet sections to arrange first and second sheet sections at an assembly station with said liners nested in said jackets, thereafter cutting out the individual nested pairs of the liners and jackets and then securing together the liners and jackets of each cut-out pair.
Claim 2
Independent Claim
151 words
A method of producing cup-shaped, double-walled articles from synthetic material wherein the outer wall of each article is defined by a jacket and wherein the inner wall of each article is defined by a liner nested in the jacket, said method comprising the steps of forming in a first forming station first sheet sections of synthetic sheet material with each of said first sheet sections containing a batch of said liners, forming in a second forming station second sheet sections of synthetic sheet material with each of said second sheet sections containing a batch of said jackets, imparting relative motion between the thusly formed first and second sheet sections to arrange first and second sheet sections at an assembly station with said liners nested in said jackets, thereafter cutting out the individual nested pairs of the liners and jackets and then securing together the liners and jackets of each cut-out pair.
Claim 3
Dependent Claim
21 words
The method defined in claim 1, wherein said batches of liners and jackets are both formed in individual separate sheet sections.
Claim 4
Dependent Claim
38 words
The method defined in claim 1, wherein one group of said batches is formed in sheet sections that are integral portions of a continuous web, and the other group of batches is formed in individual separate sheet sections.
Claim 5
Dependent Claim
17 words
The method defined in claim 1, wherein said liners and jackets are formed from different thermoplastic materials.
Claim 6
Dependent Claim
22 words
The method defined in claim 1, wherein said liners are formed of material of less thickness than the material of said jackets.
Claim 7
Dependent Claim
27 words
The method defined in claim 1, wherein batches of liners are formed at substantially the same time as corresponding batches of jackets, in the separate forming stations.
Claim 8
Dependent Claim
28 words
The method defined in claim 1, comprising the step of pressing said nested first and second sheet sections together to securely seat the nested liners in said jackets.
Claim 9
Dependent Claim
28 words
The method defined in claim 1, wherein the jackets and liners of each of said cut-out pairs are secured together along their edges peripherally surrounding their open ends.
Claim 10
Dependent Claim
68 words
The method defined in claim 1, wherein one of said sheet sections is in overlying relation relative to the other of said sections when said liners are nested in said jackets, and wherein said pairs are cut out of said first and second sheet sections in one continuous motion, first cutting through one of said sheet sections and then through the other of said sheet sections without interruption.
Claim 11
Dependent Claim
18 words
The method defined in claim 1, wherein said liners and jackets are formed from materials of different colors.
Claim 12
Dependent Claim
18 words
The method defined in claim 1, wherein said liners are formed of a softer material than said jackets.
Claim 13
Dependent Claim
23 words
The method defined in claim 1, wherein the material of said liners is more resistant to temperature than the material of said jackets.
Claim 14
Dependent Claim
73 words
The method defined in claim 1, wherein said batches of liners are formed in sheet sections that are integral portions of a first continuous web, and said batches of jackets are formed in sheet sections that are integral portions of a second continuous web, and successive batch containing sheet sections of at least one of said webs are severed and transported to nesting relation with the corresponding sheet sections of the other web.
Claim 15
Dependent Claim
26 words
The method defined in claim 13, wherein the successive batch containing sheet sections of both webs are severed prior to being transported to an assembly station.
Claim 16
Dependent Claim
25 words
The method defined in claim 1, wherein the sequence of one of said sheet sections is trimmed longitudinally prior to transfer to said assembly station.
Claim 17
Dependent Claim
22 words
The method defined in claim 15, wherein said sequence of one of said sheet sections is laterally trimmed prior to said transfer.
Claim 18
Independent Claim
169 words
A method of producing cup-shaped, double-walled articles from synthetic material wherein the outer wall of each article is defined by a jacket and wherein the inner wall of each article is defined by a liner nested in the jacket, said method comprising the steps of separately providing a plurality of first sheet sections of synthetic sheet material and a plurality of second sheet sections of synthetic sheet material, advancing said first sheet sections through a first forming station for forming a batch of said liners in each of said first sheet sections, advancing said second sheet sections through a second forming station for forming a batch of said jackets in each of said second sheet sections, imparting relative motion between the thusly formed first and second sheet sections to arrange first and second sheet sections at an assembly station with said liners nested in said jackets, thereafter cutting out the individual nested pairs of liners and jackets and then securing together the liners and jackets of each cut-out pair.
Claim 19
Independent Claim
169 words
A method of producing cup-shaped, double-walled articles from synthetic material wherein the outer wall of each article is defined by a jacket and wherein the inner wall of each article is defined by a liner nested in the jacket, said method comprising the steps of separately providing a plurality of first sheet sections of synthetic sheet material and a plurality of second sheet sections of synthetic sheet material, advancing said first sheet sections through a first forming station for forming a batch of said liners in each of said first sheet sections, advancing said second sheet sections through a second forming station for forming a batch of said jackets in each of said second sheet sections, imparting relative motion between the thusly formed first and second sheet sections to arrange first and second sheet sections at an assembly station with said liners nested in said jackets, thereafter cutting out the individual nested pairs of liners and jackets and then securing together the liners and jackets of each cut-out pair.
Claim 20
Independent Claim
190 words
A method of producing cup-shaped, double-walled articles from synthetic material wherein the outer wall of each article is defined by a jacket and wherein the inner wall of each article is defined by a liner nested in the jacket, said method comprising the steps of providing separate, first and second continuous sheets of synthetic material for respectively defining a plurality of first sheet sections and a plurality of second sheet sections, advancing said sheets through separate forming stations for forming a batch of said liners iN each of said first sheet sections at one of said stations and for forming a batch of said jackets in each of said second sheet sections at the other of said stations, successively severing the formed sheet sections from one of said sheets, imparting relative motion between the thusly severed sheet sections and the formed sheet sections of the other of said sheets to arrange first and second sheet sections at an assembly station with said liner nested in said jackets, thereafter cutting out the individual nested pairs of liners and jackets, and finally securing together the liner and jackets of each cut-out pair.
Claim 21
Independent Claim
190 words
A method of producing cup-shaped, double-walled articles from synthetic material wherein the outer wall of each article is defined by a jacket and wherein the inner wall of each article is defined by a liner nested in the jacket, said method comprising the steps of providing separate, first and second continuous sheets of synthetic material for respectively defining a plurality of first sheet sections and a plurality of second sheet sections, advancing said sheets through separate forming stations for forming a batch of said liners iN each of said first sheet sections at one of said stations and for forming a batch of said jackets in each of said second sheet sections at the other of said stations, successively severing the formed sheet sections from one of said sheets, imparting relative motion between the thusly severed sheet sections and the formed sheet sections of the other of said sheets to arrange first and second sheet sections at an assembly station with said liner nested in said jackets, thereafter cutting out the individual nested pairs of liners and jackets, and finally securing together the liner and jackets of each cut-out pair.
Claim 22
Dependent Claim
64 words
The method defined in claim 18, wherein the formed sheet sections in the other of said continuous sheets are maintained integral with said other continuous sheet throughout the steps of imparting said relative motion to said first and second sheet sections to nest said liners in said jackets and of cutting out the nested liner and jacket pairs from said first and second sections.
Claim 23
Dependent Claim
33 words
The method defined in claim 18, wherein said relative motion is effected by successively transferring each formed severed sheet section to nested relation with the formed unsevered sheet section of the other sheet.
Claim 24
Dependent Claim
26 words
The method defined in claim 18, comprising the step of pressing said first and second sections together to securely seat the nested liners in said jackets.
Claim 25
Dependent Claim
27 words
The method defined in claim 18, wherein the jackets and liners of each of said pairs are secured together along their edges peripherally surrounding their open ends.
Claim 26
Dependent Claim
64 words
The method defined in claim 18, wherein one of said sections is in overlying relation relative to the other of said sections when said liners are nested in said jackets, and wherein said pairs are cut out of said first and second sections in one continuous motion, first cutting through one of said sections and then through the other of said sections without interruption.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |