Strap assembly, strap connector, headgear, headgear assembly, method of forming headgear, tubular connector, patient interface and method of joining straps
FIGS. 1 - 16 D & 66 A- 92 D disclose a large variety of methods of forming the headgear for use in combination with a breathing apparatus comprising a unitary plastic core within textile casings. In some configurations, the plastic core material penetrates or bursts-through the textile casing of the straps. Some configurations include over moulding, alignment posts, T-joints and joint housings with injection aperture. FIGS. 17 - 65 & 93 A- 94 C disclose a large variety of different headgear arrangements including top strap, front strap, rear strap and pairs of straps extending from the mask above and below the ear to meet behind the ear. FIGS. 95 - 121 B disclose a large variety of connectors connecting the headgear assembly to the mask assembly where the headgear, mask and connector form a closed loop the connector is disengaged with the mask assembly.
1. A method for forming at least a portion of a headgear within a moulding tool, comprising:
placing a first tubular textile casing into a cavity of a first moulding tool;
positioning a portion of the first tubular textile casing in contact with an adjacent cavity having a shape of a connector portion;
introducing molten plastic material into the first moulding tool and into the first tubular textile casing;
pushing the molten plastic material into the adjacent cavity through the first tubular textile casing; and
allowing the molten plastic material to solidify within the first tubular textile casing to form a first strap portion having an inner core and a connector portion formed from unitary plastic material.
2. The method for forming at least a portion of a headgear of claim 1 , further comprising:
placing the first strap portion into a second moulding tool;
positioning an end portion of a second tubular textile casing over the connector portion and in contact with the first tubular textile casing of the first strap portion;
introducing molten plastic material into the second moulding tool and into the second tubular textile casing; and
allowing the molten plastic material to solidify within the second tubular textile casing to form a second strap portion having an inner core formed from unitary plastic material that is connected to the connector portion of the first strap portion.
3. The method for forming at least a portion of a headgear of claim 1 , wherein pushing the molten plastic material into the adjacent cavity through the first tubular textile casing further comprises displacing threads of the first tubular textile casing to form gaps in a wall of the first tubular textile casings through which the molten plastic material flows into the adjacent cavity.
4. The method for forming at least a portion of a headgear of claim 1 , wherein pushing the molten plastic material into the adjacent cavity through the first tubular textile casing further comprises tearing threads of the first tubular textile casing to form a hole in a wall of the first tubular textile casings through which the molten plastic material flows into the adjacent cavity.
5. The method for forming at least a portion of a headgear of claim 1 , wherein pushing the molten plastic material into the adjacent cavity through the first tubular textile casing further comprises stretching the first tubular textile casing to form gaps or spaces in a wall in a wall of the first tubular textile casings through which the molten plastic material flows into the adjacent cavity.
6. The method for forming at least a portion of a headgear of claim 1 , wherein a center portion of the cavity includes protrusions that depress a surface of the first tubular textile casing such that indentations are integrally formed on the surface of the first strap portion.
7. The method for forming at least a portion of a headgear of claim 1 , further comprising inserting a connector insert into the first tubular textile casing.
8. The method for forming a portion of a headgear of claim 7 , further comprising pushing the molten plastic material through an opening of the connector insert and into the first tubular textile casing.
9. The method for forming at least a portion of a headgear of claim 8 , wherein the opening of the connector insert comprises an internal connection geometry that is configured to connect with an opposing male connector geometry.
10. The method for forming at least a portion of a headgear of claim 7 , wherein the connector insert has a shape of the connector portion.
11. The method for forming at least a portion of a headgear of claim 7 , wherein the connector insert pushes an opening of the first tubular textile casing outwardly towards walls of the cavity.
12. The method for forming at least a portion of a headgear of claim 1 , wherein a width of the connector portion is equal to the width of the inner core.
13. The method for forming at least a portion of a headgear of claim 1 , wherein outer edges of the cavity narrow relative to a center portion of the cavity such that the outer edges of the first tubular textile casing are clamped to prevent the molten plastic material from flowing between the outer edges of the first tubular textile casing.
14. The method for forming at least a portion of a headgear of claim 1 , wherein at least one outer edge of the cavity in a lengthwise direction is narrow relative to a center portion of the cavity such that the at least one outer edge of the first tubular textile casing is clamped to prevent the molten plastic material from flowing along the at least one outer edge of the first tubular textile casing.
15. The method for forming at least a portion of a headgear of claim 14 , wherein the first tubular textile casing being clamped forms a soft portion on the at least one outer edge which prevents the molten plastic material from flowing therethrough.
16. The method for forming at least a portion of a headgear of claim 1 , wherein outer edges of the cavity narrow relative to a center portion of the cavity.
17. The method for forming at least a portion of a headgear of claim 1 , wherein the first tubular textile casing is knitted.
18. The method for forming at least a portion of a headgear of claim 1 , wherein the first tubular textile casing is woven, braided, or crocheted.
19. The method for forming at least a portion of a headgear of claim 1 , wherein the connector portion comprises tabs.