Face mask combination and automatic packaging method for face masks

1. A face mask combination, comprising:

an envelope having two interconnected sheet layers that confine a space therebetween, an opening formed in one of said sheet layers, and a closure sheet closing openably said opening and attached adhesively and releasably to said one of said sheet layers; and

at least one face mask disposed in said space and having two opposite ends, one of said opposite ends being disposed in proximity to said opening so as to be exposed from said opening when said closure sheet is opened.

2. The face mask wrappage of claim 1 , wherein said face mask is flat and has two ear loops disposed respectively at said opposite ends.

3. An automatic packaging method for face masks, comprising:

advancing continuously an enveloping material;

forming a plurality of openings at intervals in the enveloping material;

attaching adhesively a plurality of closure sheets to the enveloping material with each of the closure sheets closing one of the openings;

placing the face masks on the enveloping material at intervals and aligning one end of each of the face masks with one of the openings; and

forming the enveloping material into a plurality of envelopes so that each of the envelopes encloses at least one of the face masks.

4. The automatic packaging method of claim 3 , wherein the opening is large enough for passage of at least one of the face masks.

5. The automatic packaging method of claim 3 , wherein:

the enveloping material includes first and second sheets;

the openings are formed in the first sheet;

the enveloping material is advanced by arranging the first and second sheets one above the other, and advancing the first and second sheets simultaneously;

the face masks are placed between the first and second sheets; and

the forming of the enveloping material includes the steps of heat-sealing the first sheet to the second sheet, and cutting the first and second sheets at intervals.

6. The automatic packaging method of claim 3 , wherein:

the enveloping material includes a single sheet that has first and second halves;

the enveloping material is advanced by orienting the first and second halves along an advancing direction;

the openings are formed in the first half;

the forming of the enveloping material includes the steps of folding the second half relative to the first half, heat-sealing the first half to the second half, and cutting the first and second halves at intervals; and

the face masks are placed between the first and second halves before the step of heat-sealing.